Universal Display Corporation

Edward Barron

Chuanjun Xia

Walter H Yeager

Bin Ma

Lichang Zeng

Jui-Yi Tsai

Zhiqiang Ji

Alan Deangelis

Scott A Beers

Mingjuan Su

Alexey Borisovich Dyatkin

Chun Lin

Suman Layek

Jason Brooks

Vadim Adamovich

Bert Alleyne

James J Fiordeliso

Kwang-Ohk Cheon

Michael Stewart Weaver

Pierre-Luc T Boudreault

Raymond Kwong

Michael Stuart Weaver

Harvey Wendt

Nasrin Ansari

Yonggang Wu

Zeinab M Elshenawy

Ting-Chih Wang

Alan DeAngelis

Lech Michalski

Gregory S Kottas

Gregg Kottas

David B Knowles

Robert W Walters

Peter Borden Mackenzie

Cory S Brown

Raymond C Kwong

Scott Ansari

Gregory Kottas

Metal complexes with cyclic ligands having Formula (I), are disclosed. Ligands with cyclic structure are believed to be beneficial to the rigidity and stability of the metal complexes, which is desirable for improving OLED device performance.

Organic electroluminescent materials and devices

A compound having a Pt tetradentate structure of Formula 1, is provided. In the structure of Formula 1, rings C and D each independently represent 5- or 6-membered carbocyclic or heterocyclic ring; L, L, and Lare each independently a direct bond, BR, NR, PR, O, S, Se, C═O, S═O, SO, SiRR', GeRR′, alkyl, cycloalkyl, or a combination thereof; the sum of n1 and n2 is 1 or 2; X is selected from NR, O, S, and Se; Xand Xeach independently carbon or nitrogen; and one of Q, Q, and Qis oxygen, and the remaining two of Q, Q, and Qeach represents a direct bond. Formulations and devices, such as an OLEDs, that include the compound of Formula 1 are also described.

A compound having the formula: Formula I is disclosed. The compound is useful as emitters in OLEDs.

A compound having the formula Ir(L)(L)is disclosed wherein Lis an aza-DBF ligand and Lis an alkyl-substituted phenylpyridine ligand, wherein the compound has a structure according to Formula I: wherein each of Ato Acomprise carbon or nitrogen; wherein at least one of Ato Ais nitrogen; wherein ring B is bonded to ring A through a C—C bond; wherein the iridium is bonded to ring A through a Ir—C bond; wherein X is O, S, or Se; wherein R' and R″ each independently represent mono-, di-substitution, or no substitution; wherein any adjacent substitutions in R′, R″, R, R, R, R, R, and Rare optionally linked together to form a ring; wherein R, R, R′, and R″ are each independently selected from a variety of substituents; wherein R, R, R, and Rare each independently selected from the group consisting of hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof; wherein n is an integer from 1 to 3; and wherein total number of carbons in at least one of the pairs Rand R, and Rand Ris at least four.

Ligands with fused spirocyclic substitutions and metal complexes formed with such ligands and having improved performance in OLED applications are disclosed.

A compound having a Pt tetradentate structure of Formula 1, is provided. In the structure of Formula 1, rings C and D each independently represent 5- or 6-membered carbocyclic or heterocyclic ring; L, L, and Lare each independently a direct bond, BR, NR, PR, O, S, Se, C&#x2550;O, S&#x2550;O, SO, SiRR', GeRR&#x2032;, alkyl, cycloalkyl, or a combination thereof; the sum of n1 and n2 is 1 or 2; X is selected from NR, O, S, and Se; Xand Xeach independently carbon or nitrogen; and one of Q, Q, and Qis oxygen, and the remaining two of Q, Q, and Qeach represents a direct bond. Formulations and devices, such as an OLEDs, that include the compound of Formula 1 are also described.

A compound having the formula [L]Ir[L]is disclosed, where Lis selected from one of the following: The compounds have at least one pyridyl dibenzo-substituted ligand that coordinates to metal center from the sterically hindered position as exemplified by L. Because of this unique configuration, the compounds display better photo-physical and thermal properties and can be used in OLED devices to improve their performance, particularly with respect to the device's lifetime.

A compound having the formula (L)Ir(L), where Lis and Lis selected from is disclosed. In the formula (L)Ir(L), Land Lare different; each of Xto Xis C&#x2014;Ror nitrogen; X is selected from O, S, and Se; each R, R, R, R, R, and Ris hydrogen or a substituent; Ris alkyl, cycloalkyl, or a combination thereof; and m is 1 or 2. OLEDs, consumer products, and formulations including the compound are also disclosed.

A compound having a formula (L)Ir(L)having a structure selected from is disclosed. In the structures of formula (L)Ir(L), m is 1 or 2, R, R, R, R, and Rare each independently selected from hydrogen, deuterium, C1 to C6 alkyl, C1 to C6 cycloalkyl, and partially or fully deuterated variants thereof, and partially or fully fluorinated variants thereof, and, Ris selected from C1 to C6 alkyl, C1 to C6 cycloalkyl, and partially or fully deuterated variants thereof, and partially or fully fluorinated variants thereof.

A composition including a first compound capable of functioning as a phosphorescent emitter in an OLED is provided. The first compound has at least one aromatic ring and at least one substituent R directly bonded to one of the at least one aromatic rings. Each substituent R has the formula of where (a) Gis selected from NR, SiRR, GeRR, alkyl, cycloalkyl, and combinations thereof; and Gis a non-aromatic polycyclic group; (b) Gis a direct bond; and Gis a non-aromatic spiro polycyclic group; or (c) Gis selected from direct bond, NR, SiRR, GeRR, alkyl, cycloalkyl, and combinations thereof; Gis a non-aromatic polycyclic group; and R is directly bonded to a phenyl, pyridine, or triazine. R, R, and Rare a variety of substituents. Formulations and devices, such as an OLEDs, that include the first compound are also described.

Organometallic compounds comprising an imidazole carbene ligand having a N-containing ring fused to the imidazole ring are provided. In particular, the N-containing ring fused to the imidazole ring may contain one nitrogen atom or more than one nitrogen atom. These compounds may demonstrate high photoluminescent (PL) efficiency, Gaussian emission spectra, and/or short excited state lifetimes. These materials may be especially useful as blue phosphorescent emitters.

Growing community of inventors

Hamilton, NJ, United States of America

Edward Barron